I emailed Groundforce to see if they were planning shackles to raise the back and here is the response I got:
"Yes we have plans to do this as soon as we can get a truck in house for testing."
Now, I don't live in PA, so I can't volunteer. But maybe they are looking for a tester. Here is their contact info if someone would like to try:
Kent Yozie
Sales,Customer Service,Tech Support
GROUND FORCE
PO Box 150
714 Braddock View Dr
Mt Braddock, PA 15465
724-430-2068 x217
724-430-1811 fax
Ground Force Suspension - Engineered from the ground up
"Yes we have plans to do this as soon as we can get a truck in house for testing."
Now, I don't live in PA, so I can't volunteer. But maybe they are looking for a tester. Here is their contact info if someone would like to try:
Kent Yozie
Sales,Customer Service,Tech Support
GROUND FORCE
PO Box 150
714 Braddock View Dr
Mt Braddock, PA 15465
724-430-2068 x217
724-430-1811 fax
Ground Force Suspension - Engineered from the ground up